Respuesta:
[tex]4[/tex]
Explicación paso a paso:
[tex]3 ( -2x+4)=(x-7)4[/tex]
[tex]-6x +12= 4x-28[/tex]
[tex]-6x-4x = -28-12[/tex]
[tex]-10x = -40[/tex]
[tex]x = \frac{-40}{-10}[/tex]
[tex]x = 4[/tex]
verificación:
[tex]3 ( -2x+4 ) = (x-7) 4[/tex]
[tex]3[ -2(4)+4] =(4-7)*4[/tex]
[tex]3( -8+4) = (-3)(4)[/tex]
[tex]3(-4) = (-3)(4)[/tex]
[tex]-12= -12[/tex]
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Respuesta:
[tex]4[/tex]
Explicación paso a paso:
[tex]3 ( -2x+4)=(x-7)4[/tex]
[tex]-6x +12= 4x-28[/tex]
[tex]-6x-4x = -28-12[/tex]
[tex]-10x = -40[/tex]
[tex]x = \frac{-40}{-10}[/tex]
[tex]x = 4[/tex]
verificación:
[tex]3 ( -2x+4 ) = (x-7) 4[/tex]
[tex]3[ -2(4)+4] =(4-7)*4[/tex]
[tex]3( -8+4) = (-3)(4)[/tex]
[tex]3(-4) = (-3)(4)[/tex]
[tex]-12= -12[/tex]